N-shell
[ en-shel ]
/ ˈɛnˌʃɛl /
noun Physics.
the fourth shell of electrons surrounding the nucleus of an atom and containing, when filled, 32 electrons having principal quantum number 4.
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Origin of N-shell
First recorded in 1920–25
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019